Eureka, Nevada Weather Forecast Discussion

198
FXUS65 KLKN 182051
AFDLKN
Area Forecast Discussion
National Weather Service Elko NV
151 PM PDT Thu Sep 18 2025
.KEY MESSAGES...
Updated at 149 PM PDT Thu Sep 18 2025
* Clouds push up into Central Nevada today with a 25% chance of
  rain showers across Northern Nye County Thursday night.
* Mostly cloudy Friday with a 20% chance of showers across
  Northern NV and a 50% chance of showers for Central NV.
* Drier air begins to move in from the West on Saturday, with a 15
  to 30% chance of afternoon showers across Eastern Nevada.
* Mostly sunny Sunday.
&&
.UPDATE...
Issued at 149 PM PDT Thu Sep 18 2025
Clouds continue to increase from the SW as moisture from former
tropical storm Mario overspreads the region. The current forecast
is on track with minor updates to timing.
&&
.DISCUSSION...
(Today through next Thursday)
WEATHER PATTERN OVERVIEW: Cool morning temperatures continue today
with lows in the 40s. Some valley areas such as Ruby Valley,
Clover Valley, and White River Valley will see temperatures in the
30s before sunrise. High temperatures today will be in the 70s to
80s. By Friday and through the weekend, temperatures are expected
to stay in the 70s with overnight lows in the 40s (50s for
Humboldt County until Sunday). Tropical low pressure system over
southern California will move in Nevada this afternoon, bringing
in an increase in cloud cover with a 10-20% chance of showers
across central Nevada. Friday, the tropical system continues to
move slowly, extending into northern Nevada, with chances of rain
up to 20% along I-80 corridor. For central Nevada Friday, chances
of rain showers up to 40-55% with a 35% chance for thunderstorms
in the afternoon. By Saturday, the system begins to destabilize,
however lingering moisture in the air will give a 15-30% chance
for rain showers over eastern Nevada, while drier air moves in
from the west. By Sunday, zonal flow strengthens over Nevada,
bringing in mostly sunny skies. The zonal flow will bring in a
gradual increase in temperatures Monday and Tuesday reaching back
into the 80s. By Wednesday, models are showing an off-cut-low
pushing into Nevada, however there is uncertainty on the strength
and timing of the system. Northwesterly flow from this system will
cool temperatures again, putting highs into the 70s.
FORECAST CONFIDENCE & DEVIATIONS: No changes to the grids at this
time. Greater confidence of Saturday and Sunday POPs with respect
to chances for rain showers. Uncertainty with the position and
strength of the off-cut-low moving into Nevada on Wednesday.
&&
.AVIATION...
VFR conditions persist at all terminals through
Thursday evening except for KTPH where shower activity late
Thursday afternoon will continue into the evening. Momentary MVFR
and IFR are possible in and around showers near KTPH. Afternoon
wind gusts Thursday at KTPH and KELY will range 20-25KTs before
diminishing by sunset.
&&
.FIRE WEATHER...
Stable conditions over northern Nevada today while a tropical
system moves in over central Nevada this afternoon with 10-20%
chance for rain showers overnight. No chances for thunderstorm
activity today. Afternoon winds remain relatively light for all
fire weather zones. Friday, tropical system moves further north
with greater chances for rain showers across central Nevada along
with 30-35% chance for thunderstorm activity in the afternoon. No
thunderstorm activity expected in the northern fire zones, however
there is a 15-20% chance for showers.
&&
.LKN Watches/Warnings/Advisories...
None.
&&
$$
UPDATE...98
DISCUSSION...97
AVIATION...99
FIRE WEATHER...84

NWS LKN Office Area Forecast Discussion